Congestion control routing using optimal channel assignment mechanism in wireless mesh network

Multi-Radio Multi-Channel (MR-MC) Wireless Mesh Network (WMN) can increase network coverage area and capacity. The assignment of non-overlapping channels can efficiently reduce the link congestion and co-channel interference. Network experiences a channel switching delay and overheads caused by Channel Assignment (CA). In this paper, we propose a mechanism to avoid channel switching delay caused by CA procedure, using Dijkstra's algorithm. The proposed method keeps a record of congested channels in the form of a table and uses this information to assign a non-negative weighted score to the pair of nodes for efficient routing with less switching delay and overheads.